Home / 1,579.64-2,178.78-1,054.76

Finding the Fourth Proportional to 1,579.64, 2,178.78 and 1,054.76

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Solution

The fourth proportional to 1,579.64, 2,178.78 and 1,054.76 is: 1,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.64 : 2,178.78 = 1,054.76 : x
  2. Step 2: Convert to fraction form
    1,579.64/2,178.78 = 1,054.76/x
  3. Step 3: Cross multiply
    1,579.64x = 2,178.78 × 1,054.76
  4. Step 4: Simplify right side
    1,579.64x = 2,298,089.99
  5. Step 5: Solve for x
    x = 2,298,089.99/1,579.64
  6. Step 6: Final answer
    x = 1,454.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.